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Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China Received 5 July 2020; accepted 26 December 2020 Abstract: Creep deformation can be classified as homogeneous flow and inhomogeneous flow in bulk metallic glass (BMG). In order to understand the conversion conditions of the two types of creep deformation, the effect of loading rate......
Institute of Technology, Harbin 150001, China)Abstract:In order to study the effect of shear deformation on microstructure, the formed shear hydro-bent tube of aluminum alloy was investigated by using... is further refined and the grain size becomes 30-50 μm at outside and 10-20 μm at inside. The shear deformation plays an important role in the microstructure of two corner zones. The grain in the corner zones......
about 25~80nm, and extend to the boundary of Cu5.6Sn branches. The increase of cooling rate results in the increase of dislocation density and twin quantity. Key words: Cu-Sn alloy; rapid solidification......
was studied. The service life of the composite electrode reaches 7700 welds, which is 4 times that of the conventional Cu-Cr-Zr electrode. Little gross deformation is observed on the composite electrodes because of the higher thermal strength; therefore, it is believed that wear is the only mechanism for the composite electrode deterioration. However, both wear and plastic deformation are responsible......
新疆阿尔泰二叠纪,三叠纪伟晶岩侵位深度研究:来自流体包裹体的指示黄永胜1,2,张辉1,吕正航1,唐勇1,唐宏1,21. 中国科学院地球化学研究所地球内部物质高温高压重点实验室2. 中国科学院大学摘 要:伟晶岩侵位深度与伟晶岩成岩成矿的温度,压力相联系,它间接地影响着岩浆演化的热历史和成矿物质的迁移,富集,沉淀过程.本文选取新疆阿尔泰山脉代表性4条二叠纪伟晶岩,5条三叠纪伟晶岩,开展伟晶岩早期结构带及晚期石英核中石英矿物捕获的含液体CO2流体包裹体(B型)显微测温学研究.卡鲁安805,806,807号脉中石英......
西藏昌都哇了格铅-银矿床成因:矿床地质,流体包裹体和同位素地球化学制约刘兴平1,周联生1,尤静1,李随云1,刘锐21. 湖北省地质局第六地质大队2. 中国地质大学(武汉)摘 要:哇了格铅银矿床位于西藏昌都市卡若区北东(5°)约150km处,矿区出露地层主要为上三叠统,含矿层位为甲丕拉组灰岩段第2亚段(T3j2-2).矿区无岩浆岩出露,构造以断裂为主,构造行迹主要为北西向.共圈定7个工业矿体,Pb资源量(50.4×107 kg)以及伴生Ag资源量(580×103 kg)均达到大型矿床规模.本文在详细的矿床地质......
results show that the deformation body flow velocity in the die orifice increases gradually with the increase of the extrusion wheel angular velocity. But slippage between the rod and extrusion wheel... extrusion wheel angular velocity. In the deformation process, the deformation body temperature increases remarkably due to friction and deformation. So the cooling is necessary in the region of the die......
of deformation. The calculation methods of volume fraction have also been given. Comparing with common method, the simulated results are in more agreement with experiment results. Key words:transformation......
compressive deformation behavior of the superalloy was investigated on Gleeble-1500 thermal simulator at the temperature range from 1 050 ℃ to 1 140 ℃, strain rate range from 0.01 to 10 s-1 and deformation rate of 50%. The results show that, during the hot compression deformation of spray-forming FGH95 superalloy, the flow stress increases quickly with the strain increasing and then reaches a peak......
of failure of the model all the time. The experimental results indicate that the deformation of SR around a underground cavern possessed the characteristics of development by stages and in delay... kN to 182.5 kN) and residual strength (the HL was greater than 210 kN, the VL was greater than 182.5 kN). Under the high stress conditions, the phenomenon of deformation localization in the SR became......